Repair or Replace a 15-Year-Old HVAC System?

Start with these example inputs

• $2,000 repair quote
• 3 years expected life after repair
• $11,000 replacement quote
• 8-year comparison horizon

These are examples, not recommendations or market averages. Replace every number with your own quote, rates, expected life, and required installation costs.

What to stress-test

Shorten repaired life and raise future repairs. The model should also include the later replacement if the repaired unit does not last through the horizon.

What the example teaches

Do not ask the calculator to predict the future. Use it to expose the threshold: how much repaired life, future cost, or operating savings must be true before one path becomes less expensive inside the stated horizon.